Blue hair grass. 16″ or more tall, space 12″ apart, Zones 6-9, full sun, 2.5″ pot. Short mounds of narrow, semi-evergreen, blue-green foliage decorate the front of the border almost year around. Unlike most grasses, Koeleria sends up flower panicles in early or mid-summer. The erect stems of shining, silver-green spikelets age to buff.